Chap�er 36—Clu�ches s s
TRUE/FALSE s
1. Clu�ch slippage occurs when �he clu�ch disc is no� gripped firmlybe�ween �he flywheel and�he
s s s s s s s s s s s s s s s s s
pressure pla�e. s s
ANS: T s PTS: 1 s
2. Cha��eris a shudderingfel� in�he vehicle when�he pressure pla�e releases�he clu�ch disc.
s s s s s s s s s s s s s s s s
ANS: F s PTS: 1 s
3. Cha��eris caused byliquidcon�aminan�s on �he fric�ion surfaces. s s s s s s s s s s
ANS: T s PTS: 1 s
4. Clu�ch dragoccurs if �he clu�ch discis no� comple�elyreleased when �he clu�ch pedal is fully
s s s s s s s s s s s s s s s s s
depressed. s
ANS: T s s PTS: 1 s s
5. Un�il recen�ly, �he ma�erial�ha� was molded or woven in�o facings of�he clu�ch diskwas
s s s s s s s s s s s s s s s s s
predominan�lyasbes�os. s s
ANS: T s s PTS: 1 s s
6. When compared�o a diaphragm-�ype pressure pla�e, a coilspringpressure pla�e assemblyhas fewer
s s s s s s s s s s s s s s s s
movingpar�s. s s
ANS: F s s PTS: 1 s s
7. Thereis approxima�ely10 psi residual pressure in�hehydraulic clu�ch lines when �he clu�ch is in�he
s s s s s s s s s s s s s s s s s s s
engaged posi�ion. s s
ANS: F s PTS: 1 s
8. Shaf� and lever clu�ch linkage are used on mos� modern passenger cars.
s s s s s s s s s s s s
ANS: F s PTS: 1 s
9. Thefluid level in�he hydraulic clu�ch reservoir should beapproxima�elyone-four�h inch from�he �op.
s s s s s s s s s s s s s s s s
ANS: T s PTS: 1 s
10. Mos� hydraulic clu�ch release sys�ems should be adjus�ed once a year.
s s s s s s s s s s s
ANS: F s PTS: 1 s
11. Some �ransaxles have a shor�, self-cen�eringinpu� shaf��ha� does no�requirea pilo� bushingor bearing.
s s s s s s s s s s s s s s s s s
, ANS: T s PTS: 1 s
12. Par�icles of co��on, brass,rope, and wireare added�o prolong�he life of �heclu�ch disc and provide
s s s s s s s s s s s s s s s s s s s
�orsional s�reng�h. s s
ANS: T s PTS: 1 s
13. Coil spring-�ype pressure pla�es require less pedal effor� �han diaphragm-�ype pressure pla�es.
s s s s s s s s s s s s
ANS: F s PTS: 1 s
14. When�he clu�ch is fullyengaged, �he release bearingisnormallys�a�ionary.
s s s s s s s s s s s s
ANS: T s PTS: 1 s
15. Theflywheel should no� be resurfaced unless�here are ho� spo�s oni�s surface or�he rive�s on �he
s s s s s s s s s s s s s s s s s s s
clu�ch diskhave made con�ac� wi�h�he flywheel surface. s s s s s s s s s
ANS: F s PTS: 1 s
MULTIPLECHOICE s s
1. Theclu�chfric�ion disc always ro�a�es wi�h�he ______.
s s s s s s s s s
a. a. engine crankshaf�
s s s s c. c. pressure pla�e
s s s s
b. flywheel
s s d. d. �ransmission inpu� shaf�
s s s s s
ANS: D s s
�ransmission inpu� shaf s s
� s
PTS: 1 s
2. Torsional coil springs in�heclu�ch disc ______. s s s s s s s s
a. s a. absorb �he �orqueforces
s s s s s
b. s b. are�he mechanical force holding�he pressure pla�e agains� �he driven disc and flywheel
s s s s s s s s s s s s s s s
c. s c. areloca�ed be�ween �hefric�ionfacings
s s s s s s s
d. s d. all answers are correc�
s s s s s
ANS: A s s
absorb �he �orque forces s s s s
PTS: 1 s
3. Which of �he followingis probablyNOT �he cause of a vibra�ingclu�ch?
s s s s s s s s s s s s s
a. a. excessive crankshaf� endplay
s s c. c. excessive flywheel runou� s s s s s s s s
b. b. ou�-of balance pressure pla�e assembly
s s d. d. looseflywheel bol�s s s s s s s s s s s
, ANS: A s s
excessive crankshaf� endplay s s s
PTS: 1 s
4. When�he clu�ch pedal is released on a hydraulic clu�ch linkage, �he ______.
s s s s s s s s s s s s s
a.
s a. mas�er cylinder pis�on isreleased by�he pis�on re�urn spring
s s s s s s s s s s s
b.s b. mas�er cylinder pis�on is released byhydraulic pressure
s s s s s s s s s
c.
s c. slave cylinder is released byhydraulic pressure
s s s s s s s s
d.s d. slave cylinder pis�on does no� move
s s s s s s s
ANS: A s s
mas�er cylinder pis�on is released by�he pis�on re�urn spring
s s s s s s s s s s
PTS: 1 s
5. When�he clu�ch is disengaged, �he powerflows�opsa� �he ______.
s s s s s s s s s s s s
a. a. �ransmission inpu� shaf�
s s s s s c. c. pressure pla�eand flywheel
s s s s s s
b. b. driven disc hub
s s s s s d. d. �orsion springs
s s s s
ANS: C s s
pressure pla�e and flywheel s s s s
PTS: 1 s
6. Insufficien� clu�ch pedal clearance resul�s in ______. s s s s s s s
a.
s a. gear clashingwhen shif�ing�he �ransmission
s s s s s s s
b.s b. a noisyfron��ransmission bearing
s s s s s s
c.
s c. prema�ure release bearingfailure
s s s s s
d.s d. prema�ure pilo� bearingfailure
s s s s s
ANS: C s s
prema�ure release bearingfailure s s s s
PTS: 1 s
7. When makinga clu�ch adjus�men�, i� is necessary�o ______.
s s s s s s s s s s
a. a. measure clu�ch pedal free�ravel
s s s s s s s c. c. checkhydraulic fluid level
s s s s s s
b. b. lubrica�e�he clu�chlinkage
s s s s s s d. d. place �he �ransmission inreverse
s s s s s s s
ANS: A s s
measure clu�ch pedal free�ravel s s s s s
PTS: 1 s
, 8. Thesurface of �he pressure pla�e con�ac�s �he ______.
s s s s s s s s s
a. a. �ransmission main shaf�
s s s s s c. c. clu�ch disc
s s s s
b. b. �hrowou� bearing
s s s s d. flywheel s s
ANS: C s s
clu�ch disc s s
PTS: 1 s
9. Which of �he followingis NOT a spring�ype usedin pressure pla�e assemblies?
s s s s s s s s s s s s s s
a. a. Belleville
s s s c. c. diaphragm
s s s
b. coil
s s d. �orsional s s
ANS: D s s
�orsional s
PTS: 1 s
10. Theclu�chrelease bearingexer�s pressure upon �he ______.
s s s s s s s s s
a. a. clu�ch disc
s s s s c. c. pilo� bearing
s s s s
b. b. diaphragmspring
s s s s d. d. �orsional springs
s s s s
ANS: B s s
diaphragmspring s s
PTS: 1 s
11. Technician A says �he pressure pla�e assemblysqueezes �he clu�ch disc on�o�he flywheel.
s s s s s s s s s s s s s s
Technician B s s
says �he pressure pla�e moves awayfrom�he clu�ch disc so �ha��he disc can s�opro�a�ing. Who is
s s s s s s s s s s s s s s s s s s s
correc�?
a. Aonlys s c. c. bo�h Aand B
s
s s s s s s s
b. Bonlys s d. d. nei�her Anor B s s s s s s s
ANS: C s s
bo�h Aand B s s s s
PTS: 1 s
12. Technician A says an oil-soaked clu�ch disccanno�causeclu�ch cha��er.Technician B
s s s s s s s s s s s
says clu�ch cha��er canno� be caused byloose bell housingbol�s. Who is correc�?
s s s s s s s s s s s s s s s
a. Aonly
s s s c. c. bo�h Aand B
s s s s s s
b. Bonly
s s s d. d. nei�her Anor B
s s s s s s
ANS: D s s
TRUE/FALSE s
1. Clu�ch slippage occurs when �he clu�ch disc is no� gripped firmlybe�ween �he flywheel and�he
s s s s s s s s s s s s s s s s s
pressure pla�e. s s
ANS: T s PTS: 1 s
2. Cha��eris a shudderingfel� in�he vehicle when�he pressure pla�e releases�he clu�ch disc.
s s s s s s s s s s s s s s s s
ANS: F s PTS: 1 s
3. Cha��eris caused byliquidcon�aminan�s on �he fric�ion surfaces. s s s s s s s s s s
ANS: T s PTS: 1 s
4. Clu�ch dragoccurs if �he clu�ch discis no� comple�elyreleased when �he clu�ch pedal is fully
s s s s s s s s s s s s s s s s s
depressed. s
ANS: T s s PTS: 1 s s
5. Un�il recen�ly, �he ma�erial�ha� was molded or woven in�o facings of�he clu�ch diskwas
s s s s s s s s s s s s s s s s s
predominan�lyasbes�os. s s
ANS: T s s PTS: 1 s s
6. When compared�o a diaphragm-�ype pressure pla�e, a coilspringpressure pla�e assemblyhas fewer
s s s s s s s s s s s s s s s s
movingpar�s. s s
ANS: F s s PTS: 1 s s
7. Thereis approxima�ely10 psi residual pressure in�hehydraulic clu�ch lines when �he clu�ch is in�he
s s s s s s s s s s s s s s s s s s s
engaged posi�ion. s s
ANS: F s PTS: 1 s
8. Shaf� and lever clu�ch linkage are used on mos� modern passenger cars.
s s s s s s s s s s s s
ANS: F s PTS: 1 s
9. Thefluid level in�he hydraulic clu�ch reservoir should beapproxima�elyone-four�h inch from�he �op.
s s s s s s s s s s s s s s s s
ANS: T s PTS: 1 s
10. Mos� hydraulic clu�ch release sys�ems should be adjus�ed once a year.
s s s s s s s s s s s
ANS: F s PTS: 1 s
11. Some �ransaxles have a shor�, self-cen�eringinpu� shaf��ha� does no�requirea pilo� bushingor bearing.
s s s s s s s s s s s s s s s s s
, ANS: T s PTS: 1 s
12. Par�icles of co��on, brass,rope, and wireare added�o prolong�he life of �heclu�ch disc and provide
s s s s s s s s s s s s s s s s s s s
�orsional s�reng�h. s s
ANS: T s PTS: 1 s
13. Coil spring-�ype pressure pla�es require less pedal effor� �han diaphragm-�ype pressure pla�es.
s s s s s s s s s s s s
ANS: F s PTS: 1 s
14. When�he clu�ch is fullyengaged, �he release bearingisnormallys�a�ionary.
s s s s s s s s s s s s
ANS: T s PTS: 1 s
15. Theflywheel should no� be resurfaced unless�here are ho� spo�s oni�s surface or�he rive�s on �he
s s s s s s s s s s s s s s s s s s s
clu�ch diskhave made con�ac� wi�h�he flywheel surface. s s s s s s s s s
ANS: F s PTS: 1 s
MULTIPLECHOICE s s
1. Theclu�chfric�ion disc always ro�a�es wi�h�he ______.
s s s s s s s s s
a. a. engine crankshaf�
s s s s c. c. pressure pla�e
s s s s
b. flywheel
s s d. d. �ransmission inpu� shaf�
s s s s s
ANS: D s s
�ransmission inpu� shaf s s
� s
PTS: 1 s
2. Torsional coil springs in�heclu�ch disc ______. s s s s s s s s
a. s a. absorb �he �orqueforces
s s s s s
b. s b. are�he mechanical force holding�he pressure pla�e agains� �he driven disc and flywheel
s s s s s s s s s s s s s s s
c. s c. areloca�ed be�ween �hefric�ionfacings
s s s s s s s
d. s d. all answers are correc�
s s s s s
ANS: A s s
absorb �he �orque forces s s s s
PTS: 1 s
3. Which of �he followingis probablyNOT �he cause of a vibra�ingclu�ch?
s s s s s s s s s s s s s
a. a. excessive crankshaf� endplay
s s c. c. excessive flywheel runou� s s s s s s s s
b. b. ou�-of balance pressure pla�e assembly
s s d. d. looseflywheel bol�s s s s s s s s s s s
, ANS: A s s
excessive crankshaf� endplay s s s
PTS: 1 s
4. When�he clu�ch pedal is released on a hydraulic clu�ch linkage, �he ______.
s s s s s s s s s s s s s
a.
s a. mas�er cylinder pis�on isreleased by�he pis�on re�urn spring
s s s s s s s s s s s
b.s b. mas�er cylinder pis�on is released byhydraulic pressure
s s s s s s s s s
c.
s c. slave cylinder is released byhydraulic pressure
s s s s s s s s
d.s d. slave cylinder pis�on does no� move
s s s s s s s
ANS: A s s
mas�er cylinder pis�on is released by�he pis�on re�urn spring
s s s s s s s s s s
PTS: 1 s
5. When�he clu�ch is disengaged, �he powerflows�opsa� �he ______.
s s s s s s s s s s s s
a. a. �ransmission inpu� shaf�
s s s s s c. c. pressure pla�eand flywheel
s s s s s s
b. b. driven disc hub
s s s s s d. d. �orsion springs
s s s s
ANS: C s s
pressure pla�e and flywheel s s s s
PTS: 1 s
6. Insufficien� clu�ch pedal clearance resul�s in ______. s s s s s s s
a.
s a. gear clashingwhen shif�ing�he �ransmission
s s s s s s s
b.s b. a noisyfron��ransmission bearing
s s s s s s
c.
s c. prema�ure release bearingfailure
s s s s s
d.s d. prema�ure pilo� bearingfailure
s s s s s
ANS: C s s
prema�ure release bearingfailure s s s s
PTS: 1 s
7. When makinga clu�ch adjus�men�, i� is necessary�o ______.
s s s s s s s s s s
a. a. measure clu�ch pedal free�ravel
s s s s s s s c. c. checkhydraulic fluid level
s s s s s s
b. b. lubrica�e�he clu�chlinkage
s s s s s s d. d. place �he �ransmission inreverse
s s s s s s s
ANS: A s s
measure clu�ch pedal free�ravel s s s s s
PTS: 1 s
, 8. Thesurface of �he pressure pla�e con�ac�s �he ______.
s s s s s s s s s
a. a. �ransmission main shaf�
s s s s s c. c. clu�ch disc
s s s s
b. b. �hrowou� bearing
s s s s d. flywheel s s
ANS: C s s
clu�ch disc s s
PTS: 1 s
9. Which of �he followingis NOT a spring�ype usedin pressure pla�e assemblies?
s s s s s s s s s s s s s s
a. a. Belleville
s s s c. c. diaphragm
s s s
b. coil
s s d. �orsional s s
ANS: D s s
�orsional s
PTS: 1 s
10. Theclu�chrelease bearingexer�s pressure upon �he ______.
s s s s s s s s s
a. a. clu�ch disc
s s s s c. c. pilo� bearing
s s s s
b. b. diaphragmspring
s s s s d. d. �orsional springs
s s s s
ANS: B s s
diaphragmspring s s
PTS: 1 s
11. Technician A says �he pressure pla�e assemblysqueezes �he clu�ch disc on�o�he flywheel.
s s s s s s s s s s s s s s
Technician B s s
says �he pressure pla�e moves awayfrom�he clu�ch disc so �ha��he disc can s�opro�a�ing. Who is
s s s s s s s s s s s s s s s s s s s
correc�?
a. Aonlys s c. c. bo�h Aand B
s
s s s s s s s
b. Bonlys s d. d. nei�her Anor B s s s s s s s
ANS: C s s
bo�h Aand B s s s s
PTS: 1 s
12. Technician A says an oil-soaked clu�ch disccanno�causeclu�ch cha��er.Technician B
s s s s s s s s s s s
says clu�ch cha��er canno� be caused byloose bell housingbol�s. Who is correc�?
s s s s s s s s s s s s s s s
a. Aonly
s s s c. c. bo�h Aand B
s s s s s s
b. Bonly
s s s d. d. nei�her Anor B
s s s s s s
ANS: D s s
